On Skaro, the Daleks used static electricity as a power source. They could not travel beyond the metallic flooring that provided them with the electricity. (TV: The Daleks) Unlike these prototypes, the first field-tested group of Daleks created by Davros had been improved to remove this flaw. (TV: Genesis of the Daleks) Other Daleks who descended from the prototype group also outmoded this feature because of the limitations caused when disconnected from their electrical source. (TV: The Dalek Invasion of Earth)

The Slitheen harnessed electricity as a weapon during their first Earth invasion. They attached electrical transmitters to name tags and used them to zap half of UNIT's alien experts. (TV: Aliens of London)

While connected to the tower at Alexandra Palace, the Wire was capable of attacking with electric bolts strong enough to disintegrate humans. Other than causing the Tenth Doctor some pain, it did not seriously harm him. (TV: The Idiot's Lantern)

Zygons could shoot bolts of electricity from their hands, and could vary the strength of the charge to either stun humans and other Zygons, or disintegrate them into piles of hair and skin. (TV: The Zygon Invasion)